Towards the successful control of the invasive Pseudorasbora parva in the UK
- 517 Downloads
The aim of this paper is to detail a control programme of the invasive Asian cyprinid fish Pseudorasbora parva in the UK that was initiated in March 2005. Described as Europe’s most invasive fish, P. parva presents a risk to native fishes through the transmission of a novel pathogen and undesirable impacts arising from processes including increased inter-specific competition. Populations have been recorded in 32 UK waters since their first recording outside of aquaculture in 1996; the majority are lakes <5 ha used for recreational angling in England. The aims of the control programme were to develop a basic evaluation framework that assesses populations by risk (high, medium and low), determine commensurate management actions according to that risk and then execute those actions. For populations assessed as ‘high-risk’, for example those that could result in P. parva dispersal into a river catchment, eradication was determined as the commensurate management action and six operations have since been completed, principally using rotenone, and all have been successful to date. For P. parva populations in sites evaluated as lower risk, techniques such as biomanipulation were determined as more appropriate actions and have been used to successfully reduce their abundance by >99%. To date, the total direct cost of this programme of sustained and on-going P. parva control is approximately £190,000.
KeywordsEradication Evaluation framework Risk assessment Topmouth gudgeon
The authors wish to thank all Environment Agency staff involved in the Pseudorasbora parva control programme. The views expressed are those of the authors and not their parent organisations.
- Defra (2005) Standard methodology to assess the risks from non-native species considered possible problems to the environment. http://www.defra.gov.uk/wildlife-countryside/resprog/findings/non-native-risks/index.htm. Accessed 01/09/08
- Defra (2007) The invasive, non-native species framework strategy for Great Britain: protecting our natural heritage from invasive species. Department for Environment, Food and Rural Affairs, LondonGoogle Scholar
- Genovesi P, Shine C (2003) European strategy on invasive alien species. Nature and Environment, No. 137. Council of Europe Publishing, StrasbourgGoogle Scholar
- IUCN (2000) Guidelines for the prevention of biodiversity loss caused by Alien Invasive Species. IUCN, Council of The World Conservation Union, Gland Switzerland, February 2000 (http://iucn.org/)
- Perdices A, Doadrio I (1992) Presence of the Asiatic Cyprinid Pseudorasbora parva Schlegel 1842 in acque interne Italiane. Riv Idrobiol 29:461–467Google Scholar
- Simberloff D (2002) Today Tiritiri Matangi, tomorrow the World! Are we aiming too low in invasives control? In: Veitch CR, Clout MN (eds) Turning the tide: the eradication of invasive species. IUCN, Gland, pp 4–13Google Scholar
- Wildekamp RH, Van Neer W, Kucuk F, Unlusayin M (1997) First record of the eastern Asiatic gobionid fish Pseudorasbora parva from the Asiatic part of Turkey. J Fish Biol 51:858–861Google Scholar